Electrical measuring instrument.



APPLICATION men JUNE 5. 1913.

c. A. BOD DYE ELECTRICAL MEASURING INSTRUMENT.

Patented Nov. 28, 1916 2 SHEETS-SHEET I.

5 I 39 hr x i 7 47 32 l6 44 MI 12 19 Z J INVENTOR I C. A. B.ODDI E.- ELEETRICAL MEASURING INSTRUMENT. APPLICATION man luur's. 1,913.

1 06,293} Patented Nov. 28, 1916.

2 SHEETSSHEET 2.

v if

(7 ATTORNEY a max imum demand watti .dicate" the true maximum ceding byimeans pf" a pointer "to operate without clock mechanism and to be of such a construction that it shall be (ifs,

rrinu; STATES ATENT con CLAEENCEA. BODDIE, F PITTSBURGH, PENNSYLVANIA, ASSIG'NGR TO WESTINGHOUSE ELECJJBIC AND MANUFACTURING COMPANY, A 'CORTPQRATION OF PENNSYLVANIA.

ELECTRICAL MEASURING INSTRUMENT.

To all'whom it may concern: I

Be it known that I, (IL-Arenas A. Bonnie, a citizen of the United States, and a resident of Pittsburgh, inzthe county of gheny and State of Pennsylvania, have invented a new and. useful Improvement in Electrical Measuring Instruments, of which the following is a specification. My invention relates to electrical measur- QJ-ing instruments and particullarly to max? niumdemand wattmeters.

- The object of my inventiohis to provide star that will inon a circularlscale; the meter minimum size. i'- 1 p A means for indicating the maximum demand without the use of clockwork mechanism is disclosed in my U. S. application, Serial No. 687,395, filed March 30, 1912.

The device disclosed comprises. anindieating pointer that travels over a curved scale of relatively great length.

scale of a short length to indicate the sum of the maximum demands of each, day subsequent to the last setting of. the pointer.

The two'moving elements are mounted on magnetizable core opposite sides of the I member which necess tates ailarge mstru ment case. The average maximum demand may be determined by an instrument of this type by d'vidin the indicated reading by e number of eye run subsequent to. the last resetting of the pointer. I;

My present invention provides means for indicating the true maximum demand for any length oil time of further 'comput tions,=, and it is applicable to any type of alternating current 'wattrneter without unduly enlarging its case- My invention further provides a circular In the accompanying dra rings, is .a plan view of a maximum demand m strument erribody'iiig' HIV: invention; Fig. 2

-l 'vation and. partially is aview,partiall y in 1n section. of thh1nstrument shown, in Fig.

1; Fig. 3 is a lan view of the maximum demand movab e element einployed in my an elevational viewof invention; Fig; 4; is the maximum demand movable elemente ne ployed in my invention; Fig. .5 is a view taken on the line V-V of Fig. 4E; Fig. is a front clevational viewof the releasing Specification of Letters Patent.

Allethat is also provided tegratin I I mentwithout: the necessity.

Figure l mechanism, and Fig. 7 is a frontclevational Patented Nov. 28. 1916. 5 Application filed June 5, 1913. ScrialNo. '7?1,883. I I i I view of the dials and pointers employed in my intention.

An electrical measuring. instrument is provided with a main armature 1 and an auxiliary-armature 2 that operate a main mechanism '3 and an auxiliary mechanism 4,

respectively- A. controlling mechanism is also provided for interlocking the mecha- 5 nisms 3 and 4, as hereinafter described.

=Thearmature 1 is mounted on a shaft 5 v with a pinion 6 which engages a gear'wheel 7 that is mounted ona shaft 8. Aworm wheel 9 and a gear wheel 10 are 'also mounted on the' shaft 8 and'the worm wheel?) engagese gear wheel 11 that is mounted on an arbor 12. The arbor 12 is provided with a crank arm 13 which engages an arm 14: that is carried by an arbor 15. The arbor 15 is adapted to drive an in provide with a plurality of pointers 17.

The armature 2 is mounted on a shaft 18 that is disposed in close proximity to on the same side of the The shaft 18 wheel 21 havin a downwardly project'm pin :22 therein or engaging the arm 19.. second sleeve, 23, is loosely mounted onf'tl shaft 18-and is provided with a eariwheel 24 and a ratchet" wheel 25. counter weightarm 26 is mounted on sprmgSO is connected, at ,oneioff its ends tio'nary member 31.

train of gear wheels 16 that are J the shaitfIS and is provided with a counterweight member 27, a pawl 28 and a, helicalfsprin g.

29 for insuring engagement between. tl ie pawl 28 and the ratchet wheel 25. A; spirali to the arm 26 and, at itso the'r end to a sta E "An arbor 32 1S provided witha pinion andfan esca' ement wheel h l'ythe pinion I being adap ed to engage the gearlwheel 2% that is mounted on the sleeve 23. A. she. 35 is provided havinga pinion Stand spur gear wheel. 87 that engage the g wheel 21' and'a spur gear wheel 38, respec tively. The gear wheel 38 is mountedo a shaft 39 that is =16}; also provided with eflratchet wheel 40. The shaft 39 isdisfgldsed? at right angles to the shaft 35 andf hei attached'thereto one endof a sprin'g;1-41;;z

the other end of which is attached to aste tionary member 42. The shaft 39 is also provided with a maximum-demand pointeri 43 that cooperates with a 'scale 44 to indieatev the true maximum demand.

The gear wheel 10 engages a pinion 45 that i s'mounted on an arbor 46 which is also provided with an eccentric 47. The eccentric. 47 actuates an eccentric strap or lever 48 that is mounted on an arbor 49 with a double pallet 50 which limits the movement of the maximum-demand pointer through the escapement wheel 34.

A push button 51 is adapted to release a pawl 50 that engages the ratchet wheel 0 for the purpose of allowing thespringfil to rotate the pointer 43 to its initial position at any time.

If the niagnetizable core member 53 of the instrument is energized in the usual manner, my invention operates as follows:

The armature l rotates, transmitting its 1110- tion through the shaft 5, the pinion 6, the shaft 8, the gear wheel 7 the shaft-12, the worm wheel 9, the gear wheel 11, the arbor 12,, the crank 13, the lever 1.4 and the shaft 15 to the integrating mechanism 16 and the pointers 17, which indicate the integrated value of the energy being measured. Since the armatures 1 and 2 are disposed in the same magnetic field, the armature 2 will tend to rotate and to transmit its motion through the arm 19, pin 22, the gear wheel 21, the gear wheel 36, the shaft 35;the gear wheel 87, the gear wheel 38 and the shaft 39 to the pointer 43 to indicate the instantaneous variations inthe power. However, the shaft 18 is prevented from rotating at random and is only permitted to rotate after the force tending to rotate the same has existed for adefinite period of time, it being controlled by the controlling mechanism operated by the main mechanism 3.

The rotation of the armature 1 causes the shaft 8 to rotate and this, in, turn, rotates the shaft 46 that causes the double pallet 48 to be actuated at a rate proportional to the integrated value of the power being measured. Thus, the escapement wheel 34 is permitted to move in accordance with the speed of rotation ofthe armature 1. When the escapement wheel '34 is released a notch, the

resulting movement of the pinion 33, the

gear wheel 24, the ratchet 25 and the arm 26 permits the shaft 18, and likewise the as herei'ubefore described. Thehighenthe speed of rotation of the armature 1,. me

greater will be the tendencv forthe arma ture 2 to-rotate, thus, the pallet 50 will be. operated more rapidly and allow the pointer L3 to move a greater distance.

,Wlien the power being measured decreases,

as armature's l and have less tendency to posite to its'normal direction of rotation,

and the arml9 and the 'pin 22'will disen- I gage. As the shaft 18 rotates in its counterdirection of rotation, the pawl 28 rides over the teeth of the ratchet wheel 25 but the pointer 43, the shaft 39, the gear wheels 21,

36, 37 and 38 remain stationary, being held in such position by the pawl53.

' When the power being measured again increases, the armature 2 and, consequently,

the shaft 18 again rotate under a restricted motion until the arm 19 engages the pin 22, which will be at a place representing the position of thelast maximum demand. It will be understood that the notching up op eration has no elfect upon the maximum-demand pointer until the arm 19 again on gages the pin 22. If the demand exceeds the last maximum demand,.the pointer 42 will be advanced to indicatein the same manner as hereinbefore described.

, When the meter is read at definite intervals, the button 51 may be depressed to release the pawl 52 which, as hereinbefore explained, moves the pointer 43 to its initial position. The resetting of thepointer'43 also causes the sleeve 20 to be rotated to its initial position or to such position that the pin 22 engages the arm 19.

My invention is not limited to the particular construction illustrated but may be va-, 100

riously modified within the scope of the appended claims.

I claim as my invention: 1. In an electrical measuring instrument,

the combination with a main andcan auxiliary mechanism, and a single means for simultaneously and independently actuating the said mechanisms," of means interposed between the said mechanismslwhereby one controls the operation of the other, and

the combinationwith a main and an aux- 11 ihary mechanism, and a smglemeans for simultaneously and independently actuating the said meehamsms,-of means interposed" between the said mechanisms whereby one controls the operation of the other, and 1 20 means for returning one of the said mechanisms to its initial position sander predetermined conditions.v I g 8.-In an electrical measuring instrument iliarv mechanism, .and'a single meansfor simultaneously and independently actuating the said mechanisms, ofimeans interposed 5 .between the said mechanisms ,whereby I the the combination witha main and. an auxmain mechanism controls the ti'mexequired' 9 for the auxiliary mechanism to operate, and

ously applyingto said mechanisms similar means for returning the said auxiliary mechanism to its initial position under predetermined conditions.

4. A :wattmeter comprisingtwo armature elements, means for simultaneously applying thereto similar actuating forces, inte-' grating and indicating mechanisms 'associated respectively with said armature elements, means whereby the integrating armature element controls the operation of the indicating mechanism; and means for returning one of the armature elements to its initial position when the actuating force is removed.

5. A wattmetcr comprising a main and an auxiliary mechanism, means for siniulta neously applying to said mechanisms similar actuating forces, a controlling mechanism disposed between said main and said auxihiary mechanisms for-controlling the opera tion of said auxiliary mechanism, and a resetting mechanism for returning a part of said auxiliary mechanism to its initial position when the actuating forces are removed.

6. A, wattmeter comprising a main and an auxiliary mechanism, means for simultaneactnating $0 3 85, a controlling mechanism disposed between said main and said auxiliary mechanism for controlling the operaticn of said auxiliary mechanism, an automatic resetting mechanism for returning a part of the said auxiliary mechanism to its initial position when the actuating forces are removed, and means for manually'resetting theother part of the said auxiliarymechanism.

7. In an electric. measuring instru meirt,v

the combination with two rotatable members, a magnetizable core member, "said rotatable members disposed on Oneside'of said magnetite-bio core member, an integrating mechanism operatively connected to one of said rotatablemembers, an indicating mechanism operatively connected to the other of said rotatable members and a controlling mechanism disposed between said integrating and indicating mechanism, of means for automatically rotating one of said rotatable members to its initial position when the magnetizable core member is deenergized.

8.,An electrical measuring instrument comprising a main rotatable member, an auxiliary rotatable member, an integrating inecl'ianism operativeiy connected to said main rotatable member, an auxiliary mechanism operatively connected to said auxiliary rotatable member, n indicating pointer op erated by said au'nniary mechanism. means operated. by the said. main rotatable member for cimtrolling the rotation of the said auniliary rotatable member. means for retaining saidindicating pointer in any position, and resilient means for automatically rotating nisni bier to said indicating member, an escape znent device operated hysaid main rotatable member for controlling the said indicating member, a pawl forretaining the said indi eating member in any position, and means for -disconnecting said-indicating member 35m said auxiliary; rotatable member and for rotating said' auxiliary rotatable mem- 1 berina direction opposite to its normal direction of rotation;

10, An electrical measuring instrument comprisinga shaft, an armature vmounted thereon, an integrating mechanism driven by said shaft, a controlling mechanism also driven by said shaft, a second armature, a second shaft, both shafts being on the same side of the instrument, and in close FY0317 imity to each other, erated by said second shaft, a pointer, means for rotating said second armature to its initial position when the meter is not operating, means for reta ning the said pointer in itsmaximum position, and means for rctat' ins; said pointer to its initial position. I

11 In an electrical measuring instrument, the combination with an integrating mechanism, and a controlling: mechanism operatively connected to said integrating mechaf an indicating mechanism. comprising narmature, a shaft, a sleeve loosely mounted on said shaft, means for operatively .iconnecting said shaft to said sleeve, a'poirlter operatively connected. to said sleeve, "a second sleeve loosely mounted on said shaft, means for operating said second sleeve, means for operatively connecting said secondsleeve tc said controlling mechanism, means for rotating the said armature to its initial position when said instru-- ment is not'oper'ating, means for retaining the indicating pointer in its n'ia ximum position, and means for manually releasing said pointer.

12. An electrical measuring instrument,

comprising an armature, a shaft for said wheel being operatively' connected to said indicating pointer, a sleeve loosely mounted;

on said second shaft, a ratchet wheel and a gear wheel mounted on said sleeve,"a pawl connected to said second shaft for driving said sleeve, on eseapement wheel operativekv a second mechanism op-- connected to said sleeve, a double pallet op: eratively connected to said first shaftfor controlling the said escapement wheel, means for rotating the second armature to its initial position when. the meter is not operating, means for retaining the. said pointer in its maximum position, and means for releasing said pointer.

13. In an electrical measuring instrument, the combination with two movable armatures and asingle means for simultaneously actuating the same, of means interposed between the said armatures whereby one controls the operation of the other, and means for returning one of the said armataxes to its initial position under predetermined conditions.

14. In an electrical measuring instrument, the combination with two movable members and means -for applying to the said movable members similar actuating forces, of a mechanism for each of the movable members, means en train between the said mechanisms whereby one controls the other, and means whereby a part of one of the mechanisms returns to its initial position at predetermined times.

15. A wattmeter comprising a main and an auxiliary mechanism, means for independentlyapplyingto the said mechanisms similar actuating forces, means connected between the said mechanisms whereby one mechanism controls the other and means for returning a part of one of the mechanisms to its initial position under predetermined CLARENCE A. BODDIE. Witnesses:

VILLIAM A. Dunn, B. B. HINES. 

